shell:$ nslookup -timeout=2 -retry=1 'cdn.ipip.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
cdn.ipip.net	canonical name = cdn.ipip.net.cdn.cloudflare.net.
Name:	cdn.ipip.net.cdn.cloudflare.net
Address: 172.66.155.12
Name:	cdn.ipip.net.cdn.cloudflare.net
Address: 104.20.25.138